How many Soviet republics were there?

I suggest a counter-topic: "Is the unwillingness to use search a disease or a bad habit?"

The funny thing is that the Romanov dynasty ruled for 300 years, while the USSR couldn't last even 100 years.

If we measure the "correctness" of a social order in years, then primitive communism will win. Before getting involved in such an argument, it would be good to familiarize yourself with the basics of political science and sociology. It enriches you, you know.